The best strategy for Khianna to use to determine the meaning of fascism is to consult a dictionary, review each definition, and determine which definition makes sense in context.
This approach allows her to get a precise and comprehensive understanding of the term "fascism," and by reviewing multiple definitions, she can better grasp the nuances of the term and see how it connects to the historical context provided in the scenario.
Using a thesaurus may not provide the specific definition she needs, and creating an online survey would not yield an authoritative answer. Checking out a book could be helpful, but looking up the term in a dictionary offers immediate access to definitions and clarifies the term's meaning in various contexts.